Rotary-valve hydrocarbon-engine.



G. LIHOLLMANN. ROTARY yAILVE HYoHocARBoN ENGINE. AFFLICATION FILED MAY l2. i915.

1 213 '873. Patented Jan..30, 1917. 4 SHEETS-snm 1.

W2* l o P 23 /6 (z5 /9 l? IZ y y. .//f4 i? /3 ,2 /3

t 2l 77T IQ/l l z5 l Z7 WITNESSES I INVEJVTOR.A n BY l g y "7 A Tru/:Nm

G. E. HOLLMANN. ROTHV VLVE HYDROCARBON ENGINE.

APPLICATION FILED MAY l2, l9l5.

Patented Jan. 30,1917.

4 SHEETS-SHEET 2.

l /l/ l l Il lll Il INVENTOR.

W1 TNESSES 5% G. E. HOLLNANN.

ROTARY VALVE HYDRGCARBON ENGNE.

APPLICATION FILED www12, ma.

1,213,873. Patented Jan. 3o, 1917.

4 SHEETS-SHEET 3.

1N VENTOR Wmv 5513s:

n @ZJMW wm' ATTORNEY 4 SHEETS-SHEET 4.

Patented Jan. 30, 1917.

G. E. HOLLMANN. ROTARY VALVE HYDROCARBON ENGINE.

'APPLICATION FILED MAY I2. I9l5.

QN ,1 xm IIIU .a n .RPN

' JNVENTOR.

'BY E ATTORNEY GEGRGE E. HOLLMANE, QF FLEET, M'GHIGAN.

ROTARY-VALVE HYDRGARBON-EN ITE-INE.

relacio.

To all whom it mcy concern:

i Beit known that I, GEORGE E. HOLLMA'NN, a' citizen of the United lStates of America, and resident of Flint, in lthe county of Genesee and State of Michigan, have invented certain new and useful improvements ir. Rotary Valve Hydrocarbon Engines, ci which the following isla specification.

This invention relates to improvements in hydro-ca 'loon engines and particularly to the valves for the admission of fuel and the discharge of the product of combustion which takes place within the cylinders.

The objects ot' the improvement are: First; to provide valves so constructed and arranged i`n connection with the engine as to insure lubrication thereof and also the maintenance of a proper degree of temperature for the continuous operations of Athe valves; second, to construct the valves and casings therefor, so that deposits of carbon and other matter that pass into and out of the combustion chamber' through the valves, will not foul the hearing surfaces or' the valves; and third, an especial object of the invention is to provide an internal and eX- ternal 'application of the cooling agent rirectly to the hearings of the valves.

The objects of the invention are acconr plished by the construction illustrated in the accompanying drawings in which;

Figure l vis a vertical transverse section through the engine on the line i-A or" Fig. 2; Fig. 2 is a longitudinal section on the line B of Fig. l, the scale being some what enlarged; Fig. 3 is a detail view showing themeans for transmittin01 motion to the valves; Fig. Il isa side view of the valve for regulating the admission of the en .plosive mixture to the engine cylinder.; Fig. l

5 is an end view thereof; Fig. 6 is a side view of the valve for controlling the exhaust from the engine cylinders; and Fig.`7 is an end view thereof'.

Similar numerals of reference indicate correspondingv parts throughout. the several views and referring now to the same, the present invention. applies to an engine of the hydro-carbon type in which a series of cylinders (1) having reciprocating pistons (2) therein that are connected with a crank Specification of Letters latent.

Patented Jan.- 39, ist?.

Application filed May 1.2, 1%5. Serial N o. 27,526.

The number of cylinders employed, may

be varied7 the drawings show four arranged in the usual manner as an example. Tivo tubular valiecasings (6) and (Y) respec tively are formed in connection witheach if the cylinders (l), the former for the adm sion valve (S) and the latter for theer` haust valve (Sl) each of which of telnr lar form and fit within' the casings respectively so as to rotate therein. rThe casing (u) has a chamhered core (10) extending therethrough and which affords Aa hea-ring for the sleeve-valve (S). The core has two chambers (1l) and (l2) respectively, the tornier serving as a space for cooling Water, and the latter for conducting the explosive mixture to the various cylinders through 4cominunicating ports (i3) that lead from the chamber (12) into the corresponding combustion chambers (lis) o'a he cylinder. The casingp(7) is similarly formed with a core (15) having chambers 16) and (1?), the' former serving for a space for cooling water, and the latter for conveying Jfrom the combustion chambers of the cylinders the exhaust. gases7 there being a series of ports (A18) leading respectively Jfrom the cylinders into the chamber (l). y :it is the intention that the valves (53) and (9) shall have a running lit between the corresponding valve-casing and core, and when the valves are in place the corresponding ports (13) and (-18) are closed by the valves except when the ports (19) and (20) respectively in the corresponding valves register with the ports.

A jacket (2l) is formed around the upper portion of the cylinders and also around hoth of the valve casings, and has communication in its upper part through an opening "(22) with a manifold (Q3) that is at tached along the top of the jacket. Each of the cores (10) and (15') respectively has a.

is closed except for a feed-pipe (2G) that extends through the end of the core and affords means for the introduction of cooling water into the cooling chamber of the core. )t port (2T) in the lower part of the jacket (21) is also provided for the introduction of cooling water into the space (25). The cold water introduced into the port (2T) and into the chambers (ll) and (1G) through the feed-pipes (26) passes out through the opening (22) into the manifold from whence it is directed in the usual manner to a radiator which is customarily used for the reduction of the temperature of the coolingwater. The radiator and its eonuta'tions with the apparatus are not shown in the drawings as appliances of that chaiacter are well understood in the art.

The valves (S) and (9) are each in the form ot a sleeve or tube, the inner and outer surfaces of which are dressed smoothly so as to ati'ord ruiming bearing surfaces respectively to tit the corresponding core that extends within the interior and the inner surface of the tasing` Annular recesses (2H) are made in the exterior faces of the tubes coincident 'with the ports (19) and (20) respectively therein and which recesses register constantly with the corresponding ports (lil) and (18) respectively that lea from the casings into the combustion chambers of the cylinders. The purpose of the recesses is to eliminate the bearing surfaces et' the valves and their casings at points where direct exposure to the exploding gases in the cylinder occurs and in this way avoid the hindrance that generally is occasioned by deposits of carbon that would otherwise interfere more or less with the lubrication and rotation ot' the valves.

The manifold (23) is formed with a flange (2U) upon each side that fits snugly upon the top of the jacket and a port (30) is made in each of the flanges for the introduction of lubricating oil into corresponding grooves l(51) made in the', top of the jacket. Upon the interior face of each of the casings is made a series of oil grooves (32) that have communication through suitable openings (33) with the groove (31). The 'alves (8) and (9) also have openings (3l) made therein that. register with the openings (33) so that the lubricant introduced into the groove '(111) will find its way to both exterior' and interior surfaces of the'valves. I

llach of the valves extends at one end bevond its casing and has fixed thereon a gearwheel (35) that meshes with a driving gear (23(3). The gear (55(3) has fixed relation with a sprocket (3T) that is rotated by means of a chain (3S) and the latter is driven by the crank-shaft (il) as the latter is rotated. The connection of the chain and t-.iank-shaft is not illustrated in the drawings inasmuch as it consists of the well-known method of driving a chain from a rotating shaft with a pinion lixed thereon. A housing (39) having. a cover (40) is formed at thc end of the jacket (2l) for inclosing the gears, sprocket-wheel and chain, and the water feed pipes (2(5) extend through the cover (l0) into the adjacent corresponding ends of the cores. Collars (l1) secured upon the ends of the cores respectively serve to hold the corresponding valves in proper position thereon and the gears (35) in alinement with the driving gear (36).

The ports 1n the valves (S) and (9) are located so that as the valves are rotated the ports will register with the corresponding ports that lead from the respective casings into the cylinders in succession in the order desired. Explosive gas mixture is intr0- duced into the intake chamber (12) of the core (10) at its outer end by connecting the same with a suitable source of supply by means of a pipe (not shown). The exhaust chamber (17) of the core (15) 'is also con nected at its outer end with a pipe A(not shown) for carrying away the product of combustion. Cooling water is introduced through the pipes (2G) into the cooling chambers of the cores and also through the port (27) into the jacket, and the water thus introduced Hows through the cooling chain-v bers and jacket and passes out through the manifold The continual passage 0f water at a low temperature through the chambers and jacket has the effect of preq venting the internal andexternal bearing surfaces of the valves from becoming excessively hot.

By' constructing the valve casings within the jacket, and the cores 'with water cham hers that completely surround the intake and exhaust cha'mbers j of the respective cores, the entire internal and external bearing surfaces of the valves and the corresponding bearing surfaces of the cores and -asings are cooled by the passage of water through the chambers and jacket.

l. In apparatus of the class described a rotary sleeve valve having internal and external bearing surfaces and portsfor the passage of gas, and having in its external face circumferential recesses made therein at points coincident with the ports respectively.

2. In a hydro-carbon engine having a scries of cylinders, two cylindrical-valve casings havingr ports cmmnunicating respectively with the combustion chambers-of thc cylinders; a rotary sleeve valve in each of the casings having ports adapted to register respectively with the ports iu the casing as the, valve is rotated, the valve havin circumferential recesses at points conci ental with each of its ports; a cylindrical core havngconoentre chambers, the innermost of Whlch .is adapted to have communication Awith the respective combustion chambers of 5 the Cylinders through the ports in the valve and Casing periodically as the valve is rotailed, the outermost chamber being adapted for the passage therethrough of ai cooling liquid; and e mechanism for actuating the valves.

In testimony whereof I uiiiX my signature, n presence of two witnesses.

GEURGE E. ldi()Li'vANNA Witnesses: v

MARGARET C. GREEN, G. C. Dowmm. 

